WorriedSick101,
I’ve never had a “base ultrasound” with my ultrasound guided FNAB, and had about 8 of them, but all mine were done by the pathologist, not radiologist, and not even by my ENT. The pathologist more than likely saw the nodes to biopsy on imaging.
At this point, see what your ENT says, and address your concerns. You can always get a second opinion, if you want!
Good luck!